Angle-dependent reflectivity of twill-weave carbon fibre reinforced polymer for millimetre waves

Twill-weave carbon fibre reinforced polymer is measured as reflector material for electromagnetic waves at 60 GHz. The reflectivity at millimetre wavelength shows a predominant direction, which coincides with the diagonal pattern of the twill’s top layer. In the remaining directions the investigated 2/2 twill-weave composite’s reflectivity is almost isotropic.